Preheat oven to 350 degrees F. Line a baking sheet with parchment paper.
In a bowl, mix together almond flour, baking soda, and salt.
In a separate bowl, whisk together egg, peanut butter, sugar, and vanilla.
Add the dry ingredients to the wet ingredients and incorporate well.
Place 2-tablespoon portions of dough on prepared baking sheet, approximately 1-inch apart. Using a fork, press on each cookie to make a crisscross pattern.
Bake 10-12 minutes until lightly golden. Allow to cool before eating.
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Notes
Note: store leftovers at room temperature in a lightly covered container for up to 4 days or in the freezer for up to 1 month.